2,2'-(vinylenedi-p-phenylene)bis[5-methylbenzoxazole]

Boiling point

Link to relevant study record(s)

Reference

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

September 21st, 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

OECD Guideline 103 (Boiling Point)

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Specific details on test material used for the study:

The test item was used in its initial form.

Boiling pt.:

> 500 °C

Remarks on result:

not determinable

APPEARANCE OF THE SAMPLES

Before the test the appearance of test item was yellow green powder. After the experiments the test item melted in the crucible and became brown.

MEASUREMENTS

Using a linear heating rate of 10 °C/min the melting point of test item was determined to be in the range of 280 – 284 °C (553 - 557 K); no further reaction was recorded up to 500 °C.

	Experiment 1	Experiment 2	Mean
Onset of effect [°C]	280	280	280
Endset of effect [°C]	284	284	284

Experiment 1

Sample weight [mg]	Loss of Mass of the Sample (%)	Onset of effect [°C]	Endset of effect [°C]	Energy [J/g]
1.49	18.8	280.03	284.36	-106.68 (endothermic)

Experiment 2

Sample weight [mg]	Loss of Mass of the Sample (%)	Onset of effect [°C]	Endset of effect [°C]	Energy [J/g]
1.44	16.7	279.98	284.21	-108.32 (endothermic)

Conclusions:

Boiling point > 500 °C

Executive summary:

The thermal behaviour of test item was assessed using the DSC analysis, according to the OECD guideline 102/103 and OECD guideline 113. A small amount of test item was weighed into a one-way 40 µl aluminum crucible and sealed with closed aluminum lid using a capsule presser. Thus prepared capsule was inserted into the furnace of the DSC device and heated from 25 °C to 500 °C with 10 °C/minutes heating rate. The measurement was performed under nitrogen atmosphere. Before and after the test, the weight and the appearance of the sample were determined. The experiment was performed in duplicate.

Before the test the appearance of test item was yellow green powder; after the experiments the test item melted in the crucible and became brown. Using a linear heating rate of 10 °C/min the melting point of test item was determined to be in the range of 280 – 284 °C (553 - 557 K); no further reaction was recorded up to 500 °C.

Conclusion

Boiling point > 500 °C

Description of key information

Boiling point > 500 °C

Additional information

OECD 103 and OECD 113 - DSC analysis